Originally Posted by sonicboom
The bottom channel on that 71 later tanks looks almost like it would go over the new frame?? Anybody ever try this and can you fit one without cutting the underside of the tank???
I had the tank off my T120 today. Remembered this thread so checked it out against the Thruxton frame to see how close it would fit.
The channel in the 1971+ OIF tank is wide enough to clear the newer bikes spine but it would require cutting the 2 rubber covered tank attachment points (the two prongs on the spine that hold the front of the tank) on the Hinkley frame as they are wider than the OIF tank channel.
I have attached some photos showing what is going on and comparing the older and newer tanks.
Showing the width of the attachment points on the Thruxton:
Showing the width of the newer spine against the older tank. The channel will clear the spine but notice it won't fit over the 2 rubber covered attachment points:
It won't immediately fit but on a quick look I think it could be done without too much drama.
You will need to cut those tank holders. Probably also will need to weld on a vertical bolt up from the spine as the old tank is held by a vertical bolt that goes through the middle of the tank.
I don't think it wouldn't be a major drama to make it fit but if you didn't like it - then you'd have to cut off the added vertical attachment and re-weld some bits onto the tank holders to make them hold the proper tank again.
Some photos showing the relative sizes of the 2 tanks. NB when considering the relative sizes, my Thruxton is a 2006 carbed model and so it is smaller than the more recent fuel injected tanks.
Personally I think the OIF tank would look too small on the bike but that is my taste.